EP0448272B1 - A document printer including an aligner mechanism for aligning a document within said printer - Google Patents
A document printer including an aligner mechanism for aligning a document within said printer Download PDFInfo
- Publication number
- EP0448272B1 EP0448272B1 EP91302068A EP91302068A EP0448272B1 EP 0448272 B1 EP0448272 B1 EP 0448272B1 EP 91302068 A EP91302068 A EP 91302068A EP 91302068 A EP91302068 A EP 91302068A EP 0448272 B1 EP0448272 B1 EP 0448272B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- document
- shaft
- printer according
- gripper
- moved
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000007246 mechanism Effects 0.000 title claims description 30
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
- B41J13/26—Registering devices
- B41J13/28—Front lays, stops, or gauges
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K13/00—Conveying record carriers from one station to another, e.g. from stack to punching mechanism
- G06K13/02—Conveying record carriers from one station to another, e.g. from stack to punching mechanism the record carrier having longitudinal dimension comparable with transverse dimension, e.g. punched card
- G06K13/06—Guiding cards; Checking correct operation of card-conveying mechanisms
- G06K13/063—Aligning cards
Description
- This invention relates to a document printer, and more particularly, it relates to a printer having an aligner mechanism for aligning a document within the printer.
- A typical document printer includes a printer mechanism for printing data on a document, such as a sales receipt. In some printers, it is necessary to align a document in a slot within the printer prior to mechanically gripping the document in preparation for printing. Some prior art printers accomplish aligning the document by using a plurality of solenoids and a complex arrangement of mechanical levers and parts to stop the document in the slot and to grip the document. Thus, these printers required the use of parts and mechanisms which take up a lot of space and which are expensive.
- This invention overcomes these problems by providing a document printer having an aligner mechanism which effects aligning a document without the use of multiple solenoids or complex mechanical arrangements.
- An object of this invention is to provide a document printer having an aligner mechanism which is simple and inexpensive to manufacture.
- Another object of this invention is to provide an aligner mechanism which can be easily mounted in a limited amount of space in the printer.
- Another object of this invention is to provide a document printer having an aligner mechanism which utilize only one solenoid to effect moving an aligner bar and pivoting a pinch roller.
- According to the present invention there is provided a document printer including an aligner mechanism for aligning a document in said printer prior to a printing operation, said aligner mechanism including a guide wall for guiding said document within said printer, characterized in that said aligner mechanism further includes a shaft arranged for rotational movement between a first and a second position, gripper means coupled to said shaft and arranged to be moved between an open and a closed position, resilient alignment means connected to said shaft for movement therewith, and actuating means connected to said shaft for moving said shaft between said first and second positions, whereby, during movement of said shaft from said first position to said second position, said alignment means is caused to engage said guide wall while said gripper means remains in a closed position, and thereafter said alignment means is deformed and resiliently biased against said side wall while said gripper means is moved to said open position so as to enable an edge of said document to be moved into engagement with said alignment means, and whereby, during movement of said shaft from said second position to said first position, said gripper means is moved to said closed position thereby gripping said document, and thereafter said alignment means is moved out of engagement with said side wall.
- The document printer having an aligner mechanism according to the invention has the advantages of being simple and inexpensive to manufacture, and takes up a limited amount of space.
- An embodiment of the present invention will now be described with reference to the accompanying drawings, wherein:-
- Fig. 1 is a general isometric view of a document printer in which a preferred embodiment of this invention may be used;
- Fig. 2 is an isometric view of the document printer shown in Fig. 1, showing an aligner mechanism therein made according to this invention;
- Fig. 3 is a diagram showing the manner in which Figs. 3A-3C are arranged;
- Figs. 3A-3C taken together show an exploded assembly view of the aligner mechanism shown in Fig. 2;
- Fig. 4 is a side view of the aligner mechanism taken from the general direction of arrow A in Fig. 2, showing a pinch roller and a drive roller gripping a document;
- Fig. 5, which is shown on the sheet containing Fig. 2, is a fragmentary view which is taken along the general line 5-5 of Fig. 2 showing an angular relationship between a projection of a first lever and a first control member of a control sleeve;
- Fig. 6A is a side view similar to Fig. 4, showing a document about to be placed in a document receiving throat or slot, with the drive and pinch rollers engaging each other and with the aligner mechanism in a first position;
- Fig. 6B is a view similar to Fig. 6A, showing an aligner bar engaging a first wall of the slot;
- Fig. 6C is a view similar to Fig. 6B, showing the drive and pinch rollers in a second or spaced position, thereby permitting the document to be inserted in the throat and enabling an edge of the document to be aligned on an engaging portion of the aligner mechanism;
- Fig. 6D is a view similar to Fig. 6C, showing the pinch roller forcing the document against the drive roller before the aligner bar moves out from underneath the document; and
- Fig. 6E is a view similar to Fig. 6D, showing the aligner bar in the first position.
- Fig. 1 is a general isometric view of
document printer 10 in which a preferred embodiment of this invention may be used. Thedocument printer 10 comprises ahousing 12 and a control means 14 (seen in Fig. 4) located in thehousing 12 for controlling the operation of thedocument printer 10. Thedocument printer 10 also includes aslot 16 in the top (as viewed in Fig. 1) of thehousing 12 in order to permit adocument 18 having a bottom edge 18-1 to be inserted into theslot 16 from the top of thedocument printer 10 so that data can be printed on thedocument 18. As illustrated in Figs. 2, 3A and 4 theslot 16 is formed by afirst wall 20 and asecond wall 22 which are positioned in spaced parallel relationship to form theslot 16 therebetween. The first andsecond walls housing 12 and theslot 16 extends through thehousing 12. Thefirst wall 20 is slightly higher than thesecond wall 22 so as to enable an aligner bar 44 (Fig. 3A) to pass over the top of thesecond wall 22 in order to engage thefirst wall 20, as will be discussed later herein. - The
document printer 10 further includes an aligner mechanism, designated generally byarrow 24 in Figs. 2 and 3A-3C. Thealigner mechanism 24 is positioned in thehousing 12 shown in Fig. 2. The function of thealigner mechanism 24 is to align thedocument 18 in theslot 16 between apinch roller 26 and adrive roller 28. Thealigner mechanism 24 comprises ashaft 30 which is rotatably mounted in first andsecond supports housing 12. Theshaft 30 has afirst end portion 36 and asecond end portion 38. - The aligner mechanism 24 (Figs. 3A-3C) also comprises first and
second control sleeves second end portions control members aligner mechanism 24 also comprises thealigner bar 44 having afirst leg portion 46. asecond leg portion 48, and anengaging portion 50 joining the first andsecond leg portions first control sleeve 40 has a securing portion 40-1 for securing thefirst leg portion 46 to thefirst control sleeve 40, and thesecond control sleeve 42 has a securing portion 42-1 for securing thesecond leg portion 48 to thesecond control sleeve 42. In the embodiment being described, the first andsecond leg portions - The aligner mechanism 24 (Figs. 3A-3C) further comprises a
first lever 52 having first andsecond ends 54 and 56 and asecond lever 58 having first andsecond ends first ends shaft 30 adjacent to the first andsecond control sleeves first ends projections complementary notches control members projections notches sleeves members control members projections shaft 30. In the embodiment being described, the predetermined angle is less than 4 degrees. The operation of thecontrol members projections - A support rod 74 (Fig. 3A) is conventionally secured between the
second ends 56 and 62 of the first andsecond levers carriage 76 having a printer orprint member 78 secured thereto, is conventionally mounted on thesupport rod 74. In the embodiment being described, theprint member 78 is a conventional 9-wire wire matrix printer, although other printer members may be used. Thepinch roller 26, having an axle 26-1, is rotatably mounted between the second ends 56 and 62 of the first andsecond levers drive roller 28 is rotatably mounted in thehousing 12 by suitable roller bearings (not shown) so that it is operatively positioned opposite thepinch roller 26. Thecarriage 76,drive roller 28,print member 78, and pinchroller 26 are all operatively coupled to the control means 14. The control means 14 controls the movement of thecarriage 76 as well as the rotation of therollers - The aligner mechanism 24 (Figs. 3A-3C) also includes an actuating means 86 for causing the
shaft 30 to rotate from a first position to a second position. The first position corresponds to the situation in which thepinch roller 26 and thealigner bar 44 are in the position shown in Fig. 6A. The second position corresponds to when thepinch roller 26 andaligner bar 44 are in the position shown in Fig. 6C. The actuating means 86 includes an actuating lever 88 (Figs. 3C and 4) which is operatively coupled to either thefirst control sleeve 40 or thesecond control sleeve 42. In the embodiment described, the actuatinglever 88 is molded as part of thefirst control sleeve 40. The actuating means 86 also includes asolenoid 90 which is operatively coupled to theactuating lever 88. Thesolenoid 90 is conventionally coupled to the control means 14 as shown. Thesolenoid 90 is a conventionally pull-type solenoid which can pull theactuating lever 88 to move in the direction of arrow B (Fig. 3C). Because thefirst control sleeve 40 is keyed to theshaft 30, theshaft 30 will rotate in direct proportion to the rotation of thecontrol sleeve 40. Similarly, when the solenoid is deactivated, theshaft 30 will rotate in an opposite direction in proportion to the rotation of thecontrol sleeve 40. - The
aligner mechanism 24 further includes resilient means 92 (shown schematically in Fig. 3C) for biasing the first andsecond levers - The operation of the
aligner mechanism 24 in thedocument printer 10 will now be described. When it is desired to print data or information on thedocument 18, thedocument 18 is inserted intoslot 16 until the bottom edge 18-1 engages the pinch and driverollers 26 and 28 (Fig. 6A). The control means 14 energizes thesolenoid 90 of actuating means 86 which pulls the actuatinglever 88 in the direction of arrow B in Fig. 3C. This in turn causes thefirst control sleeve 40 andshaft 30 to rotate in a counterclockwise direction as viewed in Fig. 4. Thesecond control sleeve 42 also rotates in the counterclockwise direction because, like thefirst control sleeve 40, it is keyed to theshaft 30. The angular displacement E (Fig. 5) betweencontrol members projections control sleeves control members projections control members portion 50 of thealigner bar 44 engages thefirst wall 20 as shown in Fig. 6B. During this initial 4 degrees of movement, thepinch roller 26 remains in the position illustrated in Fig. 6A, and the first andsecond levers - As the
shaft 30 rotates counterclockwise beyond 4 degrees in the embodiment described, thecontrol members projections second levers pinch roller 26 to be moved away from thedrive roller 28. Notice that as theshaft 30 rotates beyond 4 degrees, thecontrol sleeve second leg portions leg portions portion 50 to be resiliently biased against thefirst wall 20 as thepinch roller 26 is being moved away from thedrive roller 28. As thepinch roller 26 is moved away from the drive roller 28 (Fig. 6C), thedocument 18 is inserted or "dropped" until the bottom edge 18-1 of thedocument 18 engages or becomes aligned with the engagingportion 50 of thealigner bar 44. - After the
document 18 is aligned as just described, thepinch roller 26 is then moved towards the drive roller 28 (by de-engergizing the solenoid 90) to secure thedocument 18 therebetween before thealigner bar 44 moves out from underneath thedocument 18 as shown in Fig. 6D, to the position shown in Fig. 6E. As mentioned previously herein, the resilient means 92 biases the first andsecond levers second levers pinch roller 26 forces or pinches thedocument 18 against thedrive roller 28. - After the
aligner bar 44 has been moved to the position indicated in Fig. 6E, thecarriage 76 andprint member 78 can traverse the length of thesupport rod 74 in order to print a line of data on thedocument 18. In order to effect printing multiple line of data, the control means 14 can cause thedrive roller 28 to rotate clockwise or counterclockwise (as viewed in Fig. 6E) which in turn causes thedocument 18 to move up or down, respectively, in theslot 16. - When it is desired to remove the
document 18 from thedocument printer 10, thedocument 18 is moved upwardly in the slot 16 (as viewed in Fig. 4 and 6E) until the bottom edge 18-1 is positioned above the position where thealigner bar 44 engages thefirst wall 20 or until thedocument 18 is moved entirely out from between thedrive roller 28 andpinch roller 26. This ensures that the engagingportion 50 does not engage thedocument 18 when thealigner bar 44 moves toward thefirst wall 20. The method and sequence of operations shown in Figs. 6A-6E are then repeated. As was described earlier herein, thealigner bar 44 engages thefirst wall 20 before thepinch roller 26 moves toward the second position shown in Fig. 6C. This prevents thedocument 18 from falling below the engagingportion 50 to the bottom of theslot 16 after thepinch roller 26 disengages thedrive roller 28. It is to be noted that thesolenoid 90 may not be energized until thedocument 18 has been removed from theslot 16 and then only if it is desired to print on anotherdocument 18. By not opening thepinch roller 26 and driveroller 28, the document is at the maximum height for an operator to grip and remove thedocument 18 from thedocument printer 10. - While the invention has been described with reference to a specific embodiment, this description is merely illustrative, and it is not to be construed as limiting the scope of the invention. Various other modifications and changes may occur to those skilled in the art without departing from the scope of the invention as defined by the appended claims.
Claims (9)
- A document printer including an aligner mechanism (24) for aligning a document in said printer prior to a printing operation, said aligner mechanism including a guide wall (20) for guiding said document within said printer, characterized in that said aligner mechanism further includes a shaft (30) arranged for rotational movement between a first and a second position, gripper means (26,28,52,58) coupled to said shaft and arranged to be moved between an open and a closed position, resilient alignment means (44) connected to said shaft for movement therewith, and actuating means (90) connected to said shaft for moving said shaft between said first and second positions, whereby, during movement of said shaft from said first position to said second position, said alignment means (44) is caused to engage said guide wall (20) while said gripper means remains in a closed position, and thereafter said alignment means is deformed and resiliently biased against said side wall while said gripper means is moved to said open position so as to enable an edge of said document to be moved into engagement with said alignment means, and whereby, during movement of said shaft from said second position to said first position, said gripper means is moved to said closed position thereby gripping said document, and thereafter said alignment means is moved out of engagement with said side wall.
- A document printer according to claim 1, characterized in that said alignment means (44) is connected to sleeve means (40,42) mounted on said shaft for movement therewith, and said gripper means (26,28) includes lever means (52,58) mounted on said shaft adjacent said sleeve means for cooperation therewith to provide a lost motion coupling, so that during movement of said shaft to said second position, said sleeve means cause said alignment means to move into engagement with said guide wall (20), and thereafter movement of said shaft and said sleeve means cause said lever means to move, thereby causing said gripper means to move to said open position.
- A document printer according to claim 1 or claim 2, characterized in that said gripper means (26,28,52,58) is biased to said closed position by resilient means (92) acting upon said lever means (52,58).
- A document printer according to claim 2 or claim 3, characterized in that said lever means (52,58) is provided with a cylindrical end portion (60) having a hole therethrough to accommodate said shaft, and radially extending protrusion means (72); said sleeve means (40,42) having radially extending slot means (71) and being arranged to cooperate with said end portion (60) to enable said protrusion means to be accommodated within said slot means, said slot means being larger than said protrusion means so that said sleeve means can rotate a predetermined distance before said lever means is moved, thereby providing said lost motion coupling.
- A document printer according to any preceding claim, characterized in that said alignment means (44) comprises a bar having first and second leg portions (46,48) depending from first and second end portions of said bar respectively, said leg portions being connected to said shaft.
- A document printer according to any preceding claim, characterized in that said actuating means includes a solenoid.
- A document printer according to any preceding claim, characterized in that said gripper means includes pinch roller means (26) mounted on a further shaft (26-1) supported by said lever means (52,58), drive roller means (28) mounted for cooperation with said pinch roller means enabling said document to be transported between said pinch roller means and said drive roller means.
- A document printer according to claim 7, characterized in that said pinch roller means (26) is biased towards said drive roller means (28) by said resilient means (92).
- A document printer according to any one of the preceding claims 2 to 8, characterized in that said lever means (52,58) support a rod (74) for mounting a carriage (76) and print member (78).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US495813 | 1990-03-16 | ||
US07/495,813 US5018719A (en) | 1990-03-16 | 1990-03-16 | Aligner mechanism for aligning a document in a business machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0448272A1 EP0448272A1 (en) | 1991-09-25 |
EP0448272B1 true EP0448272B1 (en) | 1994-06-15 |
Family
ID=23970087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91302068A Expired - Lifetime EP0448272B1 (en) | 1990-03-16 | 1991-03-12 | A document printer including an aligner mechanism for aligning a document within said printer |
Country Status (4)
Country | Link |
---|---|
US (1) | US5018719A (en) |
EP (1) | EP0448272B1 (en) |
JP (1) | JP3089043B2 (en) |
DE (1) | DE69102466T2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5520776A (en) * | 1994-05-10 | 1996-05-28 | Polaroid Corporation | Method and apparatus for delaminating a laminate |
US8123216B2 (en) * | 2010-02-25 | 2012-02-28 | Bell And Howell, Llc | Systems and methods for controlling actuator force as a controllable replacement for a common spring in sheet article processing and related sheet article processing apparatuses |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3100113A (en) * | 1960-11-01 | 1963-08-06 | Ncr Co | Check feeding and alining mechanism |
IT1020820B (en) * | 1974-09-18 | 1977-12-30 | Olivetti & Co Spa | DEVICE FOR AUTOMATIC FEEDING OF DOCUMENTS FOR ACCOUNTING MACHINES OR SIMILAR |
US4259569A (en) * | 1979-05-14 | 1981-03-31 | Ncr Corporation | Code sensing system |
US4283622A (en) * | 1979-05-14 | 1981-08-11 | Ncr Corporation | Bar code reader |
US4577984A (en) * | 1982-12-07 | 1986-03-25 | Brother Kogyo Kabushiki Kaisha | Paper feeding device for a printing apparatus providing alternatively different feed paths |
US4548521A (en) * | 1983-12-09 | 1985-10-22 | Ncr Corporation | Dot matrix print head |
DD246450A3 (en) * | 1984-12-27 | 1987-06-10 | Robotron Bueromasch | TRANSPORT DEVICE FOR SINGLE AND FINAL FORMS IN A PRINTING EQUIPMENT |
JPS61154961A (en) * | 1984-12-28 | 1986-07-14 | エヌ・シ−・ア−ル・コ−ポレ−シヨン | Dot matrix printer |
US4632580A (en) * | 1985-03-25 | 1986-12-30 | Ncr Corporation | Dot matrix print head dampening mechanism |
JPS62280150A (en) * | 1986-05-30 | 1987-12-05 | Nec Corp | Automatic medium oblique travel correction device |
US4780007A (en) * | 1987-06-29 | 1988-10-25 | Ncr Corporation | Record media thickness compensating mechanism |
US4795282A (en) * | 1987-10-08 | 1989-01-03 | Ncr Corporation | Paper guide and stop for multi-function printer |
-
1990
- 1990-03-16 US US07/495,813 patent/US5018719A/en not_active Expired - Lifetime
-
1991
- 1991-03-11 JP JP03069508A patent/JP3089043B2/en not_active Expired - Fee Related
- 1991-03-12 EP EP91302068A patent/EP0448272B1/en not_active Expired - Lifetime
- 1991-03-12 DE DE69102466T patent/DE69102466T2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH04226377A (en) | 1992-08-17 |
US5018719A (en) | 1991-05-28 |
DE69102466T2 (en) | 1995-02-23 |
EP0448272A1 (en) | 1991-09-25 |
DE69102466D1 (en) | 1994-07-21 |
JP3089043B2 (en) | 2000-09-18 |
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